# Which products result in a perfect square trinomial? Check all that apply. A=(–x + 9)(–x – 9) B=(xy + x)(xy + x) C=(2x – 3)(–3 + 2x) D=(16 – x2)(x2 – 16) E=(4y2 + 25)(25 + 4y2)

QUESTION POSTED AT 18/01/2020 - 07:11 AM

QUESTION POSTED AT 18/01/2020 - 07:11 AM

The *correct answers* are:

B=(xy + x)(xy + x) ; C=(2x – 3)(–3 + 2x) ; and E=(4y² + 25)(25 + 4y²)

**Explanation**:

In order to have a perfect square trinomial, we must multiply two binomials that are exactly the same. For (xy+x)(xy+x), are multiplying two identical binomials.

For (2x-3)(-3+2x), we are multiplying two binomials that are the same but written in a different order. The same is true of (4y² + 25)(25 + 4y²).

They are also congruent. Or equal.

ANSWERED AT 24/02/2020 - 12:37 AM

QUESTION POSTED AT 24/02/2020 - 12:37 AM

F(x + 1) = 3(x + 1) + 4 = 3x + 7

Hopefully this helps

Hopefully this helps

ANSWERED AT 24/02/2020 - 12:36 AM

QUESTION POSTED AT 24/02/2020 - 12:36 AM

41.5 degrees

There are 180 degrees in a semicircle. So if if 56 and 41 degrees are taken, that means that 83 degrees are left. One the angle is on one side of 'x' is the same as the other side. So that means that the 83 degrees that are left are split evenly in two. Therefore 'x' is 41.5 degrees. The equation would look like the following.

180-((angle)+(if other angles)= Left over degrees

Your specific equation looks like the following.

180- 97 = 83 83/2=**41.5**

[56+41]

There are 180 degrees in a semicircle. So if if 56 and 41 degrees are taken, that means that 83 degrees are left. One the angle is on one side of 'x' is the same as the other side. So that means that the 83 degrees that are left are split evenly in two. Therefore 'x' is 41.5 degrees. The equation would look like the following.

180-((angle)+(if other angles)= Left over degrees

Your specific equation looks like the following.

180- 97 = 83 83/2=

[56+41]

ANSWERED AT 24/02/2020 - 12:36 AM

QUESTION POSTED AT 24/02/2020 - 12:36 AM

It can be divide into 5 teams with 5 members each

ANSWERED AT 24/02/2020 - 12:36 AM

QUESTION POSTED AT 24/02/2020 - 12:36 AM

5x = y + 6 (I)

2x - 3y = 4 (II)

-------------------

We have:

5x = y + 6 →

Soon:

2x - 3y = 4 →

least common multiple (5)

2x - 3y = 4 (II)

-------------------

We have:

5x = y + 6 →

Soon:

2x - 3y = 4 →

least common multiple (5)

ANSWERED AT 24/02/2020 - 12:34 AM

QUESTION POSTED AT 24/02/2020 - 12:34 AM

**Answer: Third option is correct.**

**Step-by-step explanation:**

Since we have given that

Charges for a 3 hour service call on Monday = $94

Charges for a 5 hour service call on Tuesday = $130

So, our coordinates will be (3,94) and (5,130)

As we know the** "Two point form":**

Now, we need the charges for 2 hour service call.

Let x = 2 hours

We get that

Charges for 2 hour service = $76.

**Hence, Third option is correct.**

ANSWERED AT 24/02/2020 - 12:34 AM

QUESTION POSTED AT 24/02/2020 - 12:34 AM

You have to find the lowest common multiple of 5 and 3, which is 5 × 3 = 15, answer B. I hope this helps!

ANSWERED AT 24/02/2020 - 12:33 AM

QUESTION POSTED AT 24/02/2020 - 12:33 AM

**Answer:**

You get a square, I just took the test and got it right.

**Step-by-step explanation:**

with a square pyramid the base would be square so by cutting parallel of the shape you basically are left with the shape of the base.

ANSWERED AT 24/02/2020 - 12:33 AM

QUESTION POSTED AT 24/02/2020 - 12:33 AM

Using the Transformation formula.

2x - 2 = -5

Add 2 to both sides.

2x - 2 + 2 = -5 + 2

2x = -3

Divide both sides by 2

=

x =

2x - 2 = -5

Add 2 to both sides.

2x - 2 + 2 = -5 + 2

2x = -3

Divide both sides by 2

=

x =

ANSWERED AT 24/02/2020 - 12:32 AM

QUESTION POSTED AT 24/02/2020 - 12:32 AM

The (x + 4) tells you that the function is moving 4 units to the left.

the answer would be letter C

the answer would be letter C

ANSWERED AT 24/02/2020 - 12:32 AM

QUESTION POSTED AT 24/02/2020 - 12:32 AM

The graphs are not visible

ANSWERED AT 24/02/2020 - 12:31 AM

QUESTION POSTED AT 24/02/2020 - 12:31 AM

21-9 over 5-(-1)

12/6

slope=2

12/6

slope=2

ANSWERED AT 24/02/2020 - 12:31 AM

QUESTION POSTED AT 24/02/2020 - 12:31 AM

C. Trapezoid ABCD was rotated 90° counterclockwise around the origin and then reflected across the x-axis.

ANSWERED AT 24/02/2020 - 12:29 AM

QUESTION POSTED AT 24/02/2020 - 12:29 AM

3(4x - 5) = 45

first use the distributive property to clear the parenthesis

3*4x + 3*-5 = 45

12x - 15 = 45

add 15 to both sides

12x - 15 + 15 = 45 + 15

12x = 60

to clear the multiplication by 12, divide by sides by 12

12x/12 = 60/12

x = 5

4^3 * (x^2)^3

64 x^6

first use the distributive property to clear the parenthesis

3*4x + 3*-5 = 45

12x - 15 = 45

add 15 to both sides

12x - 15 + 15 = 45 + 15

12x = 60

to clear the multiplication by 12, divide by sides by 12

12x/12 = 60/12

x = 5

4^3 * (x^2)^3

64 x^6

ANSWERED AT 24/02/2020 - 12:27 AM

QUESTION POSTED AT 24/02/2020 - 12:27 AM

Let us first try and solve this equation to see how many solutions are for this equation.

We need to have x on one side of the equation and everything on the opposite side of x.

1/2(4x - 9) = 2x + 8 ; Start

2x - 4.5 = 2x + 8 ; Distribute the 1/2 across 4x and -9

2x = 2x + 12.5 ; Add 4.5 to each side of the equation

0 = 12.5 ; Subtract 2x from each side of the equation

As we can clearly see, this equation has 0 answers.

We need to have x on one side of the equation and everything on the opposite side of x.

1/2(4x - 9) = 2x + 8 ; Start

2x - 4.5 = 2x + 8 ; Distribute the 1/2 across 4x and -9

2x = 2x + 12.5 ; Add 4.5 to each side of the equation

0 = 12.5 ; Subtract 2x from each side of the equation

As we can clearly see, this equation has 0 answers.

ANSWERED AT 24/02/2020 - 12:26 AM

QUESTION POSTED AT 24/02/2020 - 12:26 AM

You should find the rate of change of the table or you should just put the coordinates in a grid.

ANSWERED AT 24/02/2020 - 12:25 AM

QUESTION POSTED AT 24/02/2020 - 12:25 AM

Ya multimodel

and mode is 49,27

and mode is 49,27

ANSWERED AT 24/02/2020 - 12:24 AM

QUESTION POSTED AT 24/02/2020 - 12:24 AM

hope that helps!!

ANSWERED AT 24/02/2020 - 12:24 AM

QUESTION POSTED AT 24/02/2020 - 12:24 AM

By the polynomial remainder theorem, will be divisible by if the value of the polynomial at is 0.

which occurs for .

which occurs for .

ANSWERED AT 24/02/2020 - 12:23 AM

QUESTION POSTED AT 24/02/2020 - 12:23 AM

All the numbers in this range can be written as with and . Construct a table like so (see attached; apparently the environment for constructing tables isn't supported on this site...)

so that each entry in the table corresponds to the sum of the tens digit (row) and the ones digit (column). Now, you want to find the numbers whose digits add to perfect squares, which occurs when the sum of the digits is either of 1, 4, 9, or 16. You'll notice that this happens along some diagonals.

For each number that occupies an entire diagonal in the table, it's easy to see that that number shows up times in the table, so there is one instance of 1, four of 4, and nine of 9. Meanwhile, 16 shows up only twice due to the constraints of the table.

So there are 16 instances of two digit numbers between 10 and 92 whose digits add to perfect squares.

so that each entry in the table corresponds to the sum of the tens digit (row) and the ones digit (column). Now, you want to find the numbers whose digits add to perfect squares, which occurs when the sum of the digits is either of 1, 4, 9, or 16. You'll notice that this happens along some diagonals.

For each number that occupies an entire diagonal in the table, it's easy to see that that number shows up times in the table, so there is one instance of 1, four of 4, and nine of 9. Meanwhile, 16 shows up only twice due to the constraints of the table.

So there are 16 instances of two digit numbers between 10 and 92 whose digits add to perfect squares.

ANSWERED AT 24/02/2020 - 12:22 AM

QUESTION POSTED AT 24/02/2020 - 12:22 AM

X = k/y

4 = k/10

k = 4 x 10 = 40

Thus, x = 40 / y

90 = 40 / y

y = 40/90 = 4/9

4 = k/10

k = 4 x 10 = 40

Thus, x = 40 / y

90 = 40 / y

y = 40/90 = 4/9

ANSWERED AT 24/02/2020 - 12:18 AM

QUESTION POSTED AT 24/02/2020 - 12:18 AM

I think its b Triangle ABC was reflected across the y-axis and then translated 7 units down.

ANSWERED AT 24/02/2020 - 12:17 AM

QUESTION POSTED AT 24/02/2020 - 12:17 AM

The answer is A: reflect triangle a over the x axis translate it 4 units to the right and reflect it over the y axis

ANSWERED AT 24/02/2020 - 12:17 AM

QUESTION POSTED AT 24/02/2020 - 12:17 AM

(8^4)5 (7^3)9

4,096(5) 343(9)

20,480 x 3,087

63,221,760

I think this is the Answer...

4,096(5) 343(9)

20,480 x 3,087

63,221,760

I think this is the Answer...

ANSWERED AT 24/02/2020 - 12:15 AM

QUESTION POSTED AT 24/02/2020 - 12:15 AM

Solving:

*Simple Permutation

Answer:**B. 6**

**6 Combinations of three numbers** (348, 384, 483, 438, 834, 843)

*Simple Permutation

Answer:

ANSWERED AT 24/02/2020 - 12:13 AM

QUESTION POSTED AT 24/02/2020 - 12:13 AM

**Answer:**

The equation is ; The value of *x* is **4.2ft**.

**Step-by-step explanation:**

A ratio is like a *constant* that remains between two values, and we can use it to find whatever others that keep the same constant relation between them.

Hank wants a dog run that keeps a constant relation between length to the width. That is, the *length* must be **2.5** times to the *width* ( ).

So, knowing that ratio or constant, we can represent it as follows:

**[ 1 ]**

But, it also could be expressed as the relation between the width to the length:

**[ 2 ]**

He wants a lenght of **10.5***ft for building a dog run for his dog*, and that this new value must keep the ratio just explained **[ 1 ] **to the width expected.

So, the equation is:

And we have to find the value for *x *that solve this equation.

However, we can use an easier way to represent this using the equation [ 2 ] for solving *x *:

That is, the width must be **4.2ft** to keep the ratio *length to the width* 5:2 ( or the ratio *width to the length* 2:5).

To check this answer:

.

.

ANSWERED AT 24/02/2020 - 12:12 AM

QUESTION POSTED AT 24/02/2020 - 12:12 AM

**Answer:**

1. 52° + x° + 67° = 180°

2. x° + 22° = 90°

**Step-by-step explanation:**

**1**. In the first figure,

Since the angles given are **supplementary angles **i.e. their sum is 180°

So, we get,

52° + x° + 67° = 180°

i.e. x° = 180° - 119°

i.e. x° = 61°

**Thus, the expression to find the value of x is 52° + x° + 67° = 180°.**

**2**. In the second figure,

Since the angles given are **complementary angles **i.e. their sum is 90°

This gives us,

x° + 22° = 90°

i.e. x° = 90° - 22°

i.e. x° = 68°

**Hence, the expression to find the value of x is x° + 22° = 90°**

ANSWERED AT 24/02/2020 - 12:11 AM

QUESTION POSTED AT 24/02/2020 - 12:11 AM

**Answer:**

**D **is the answer

**Step-by-step explanation:**

86+86=175

360-175=188

188/2

94

all rhombus's equal 360*

No need to solve for (b-10) since 86* is parallel and congruent

Just add both sides subtract by 360 and divide answer by 2 and you have the degrees for both X and C

ANSWERED AT 24/02/2020 - 12:10 AM

QUESTION POSTED AT 24/02/2020 - 12:10 AM

**Answer: b . 14 % **

**Step-by-step explanation:**

Since, the population of Algeria = 9,416,534

If the average annual salary of an Algerian = $6,844

Then the total earning of the people of Algeria = 9,416,534 × 6,844 = dollars

Let the percentage of income tax = x %

⇒ The total income tax raised by the government = x % of

=

=

=

According to the question,

⇒ **Option b is correct.**

ANSWERED AT 24/02/2020 - 12:09 AM

QUESTION POSTED AT 24/02/2020 - 12:09 AM

(0,-6), (6, -3), and (6,-6)

If you plot them on a graph there are only two point options (in green and purple) since it's a right triangle but you have to use the one that has -6 as the y value

If you plot them on a graph there are only two point options (in green and purple) since it's a right triangle but you have to use the one that has -6 as the y value

ANSWERED AT 24/02/2020 - 12:09 AM

QUESTION POSTED AT 24/02/2020 - 12:09 AM